When running a recording with an HMS III, HMS IV or a BEQ II while synchronously online monitoring the recording, there might occur strong overloads during a range shift (reduction of the recording range).

The occurring overloads injure the sense of hearing seriously.

Using the current firmware for the afore-mentioned recording devices prevents overloads during the range shift by means of a delayed fading.We strongly recommend all our customers to keep all existing HMS III, HMS IV and BEQ II recording systems updated to the latest firmware and thus to protect yourself from a possible danger and to benefit from the continuing improvements of the products.

If you do not have the access data to this website available, please apply to your HEAD acoustics contact.

The artificial
head geometry offers you:

a mathematically describable reproduction
of the human head and shoulder geometry with an award-winning
design

an accurate reproduction of all acoustically
relevant parts of the human outer ear

Turn it on - Record - Done!

The HEAD Measurement System
IV is a stand-alone, mobile measuring device that is ready
to perform aurally accurate binaural recordings immediately
after powering up.

The recordings can be saved
directly to a CompactFlash card, allowing stand-alone
operation without a notebook or PC. Via the integrated
headphone output, the recordings can be played back immediately
with aurally accurate equalization.

Artificial head measurement
systems like the HMS IV are compatible with conventional
measurement technology and are necessary for an authentic
hearing impression during playback.

Applications

Examination and optimization
of the sound quality of technical products:
motor vehicles and car components, domestic
appliances, office machines and power
tools